Pressure infusion device
First Claim
1. A pressure infusion device for medical applications comprising:
- a sealed bag of flexible material having means secured thereto for holding a liquid containing plastic bag to apply pressure to the liquid containing bag as fluid under pressure is introduced into the sealed bag, the liquid containing bag having an outlet connected to a tube for delivering the liquid in the bag to a medical patient;
means for introducing fluid under pressure into the sealed bag; and
a gauge for measuring the pressure within the sealed bag, the gauge being in the form of a tube extending through a wall of the sealed bag and comprising a plunger movable in the tube and biased into the sealed bag, said plunger being exposed to the pressure within the sealed bag, the plunger movable outwardly against its bias to an extent dependent upon the pressure in the sealed bag, the plunger projecting out of the tube when it moves outwardly and having indicia thereon to indicate the extent to which the plunger has moved outwardly.
1 Assignment
0 Petitions
Accused Products
Abstract
A pressure infusion device for medical applications for applying pressure to a sealed bag of liquid, such as an I.V. bag, in which the pressure gauge is fastened directly in the pressure applying bag which presses against the I.V. bag. The gauge has a movable plunger which moves outwardly from the bag by an amount depending upon the pressure within the bag. The pressure infusion arrangement is designed to be relatively inexpensive so that it can be discarded after being used. There are two forms, one in which the I.V. bag is held against the pressure applying bag by a mesh which is secured to a fabric to form a pocket for the I.V. bag and the pressure applying bag. In the other form, the mesh is secured directly to the edge of the pressure applying bag.
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Citations
10 Claims
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1. A pressure infusion device for medical applications comprising:
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a sealed bag of flexible material having means secured thereto for holding a liquid containing plastic bag to apply pressure to the liquid containing bag as fluid under pressure is introduced into the sealed bag, the liquid containing bag having an outlet connected to a tube for delivering the liquid in the bag to a medical patient; means for introducing fluid under pressure into the sealed bag; and a gauge for measuring the pressure within the sealed bag, the gauge being in the form of a tube extending through a wall of the sealed bag and comprising a plunger movable in the tube and biased into the sealed bag, said plunger being exposed to the pressure within the sealed bag, the plunger movable outwardly against its bias to an extent dependent upon the pressure in the sealed bag, the plunger projecting out of the tube when it moves outwardly and having indicia thereon to indicate the extent to which the plunger has moved outwardly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification